THE HARVEST FLIES OR CICADAS 



(Family Cicadidce) 



This is a group of insects commonly known by the popular 

 name of " harvest flies " or cicadas, and frequently in this country 

 by the erroneous term " locust." We 

 have already seen that the term 

 "locusts" should properly be applied 

 to the long-horned grasshoppers of 

 the true family Locustidse, although it 

 is also, especially by British subjects, 

 applied to the short-horned grass- 



Fig. ]22. — Periodical Cicada: a, male, of the 



large form ; 6, male, of the small form. 



(After Riley.) 



hoppers and especially the destructive 

 species. The family Cicadidse is a 

 group of large insects containing very 

 many tropical species. Their bodies 

 are large, with a wide, blunt head, 

 and with prominent eyes on the outer 



231 



Fig. 123. — Twigs punctr.ved by 



Cicadas, illustrating manner of 



breaking. (After Riley.) 



